You're a few clicks away from a prompt library that actually works — saved once, used everywhere, in ChatGPT, Claude, DeepSeek, and Kimi.
This is the practical guide for PromptMate, a free and open-source prompt library built by Jitan Gupta. If you came here wondering what PromptMate is, how it works, or whether your prompts stay with you, this page has the answers.
Install PromptMate, open a supported AI tool, save your first prompt, and use it without leaving the chat page.
Jump to sectionWatch the core workflow, editing flow, history restore, and cross-platform use across ChatGPT, Claude, DeepSeek, and Kimi.
Jump to sectionSee how your saved instruction, selected tone, and selected format become the final prompt inserted into your AI chat.
Jump to sectionSix practical rules for writing prompts that are specific, reusable, easy to test, and worth keeping in your library.
Go to pageCopy-ready prompts for engineers across code review, writing, debugging, and more. Add them to your library in one click.
Go to pageIf you edited a prompt and want an older version back, learn how version history and restore work.
Jump to sectionNo account. No backend. Just install, save, and use.
Add PromptMate from the Chrome Web Store. Works on Chrome, Brave, Edge, and all Chromium-based browsers.
When you open the sidebar for the first time, PromptMate asks to connect your Google Drive. Your library syncs to your own private folder — nothing stored on any external server.
Navigate to ChatGPT, Claude, DeepSeek, or Kimi. Look for the PromptMate button in the bottom-right corner and click it to open your sidebar.
Click "New Prompt", write your instruction, choose a tone and output format, then save it to your library.
Find your prompt in the sidebar, click "Use" — it inserts into the chat with your tone and format applied.
Every prompt in PromptMate carries two signals beyond the text: a tone (formal, casual, technical) and an output format (bullets, steps, prose, code). When you click Use, both are appended automatically — no manual adjustment every session.
Prompts aren't static. Open any saved prompt and edit it mid-session — your changes save back to the library. Every edit creates a version, so you can browse the history and restore any prior version without losing work.
Same sidebar, same library, all four interfaces. Install once and your entire prompt collection is available wherever you work — ChatGPT, Claude, DeepSeek, Kimi. No duplicate setup, no syncing.
PromptMate keeps the task you wrote as the source of truth, then adds your selected tone and output format when you click Use. The result is a fuller prompt without retyping the same framing every time.
This is the core task you save in PromptMate: what the AI should do, the context it needs, and any constraints that should travel with the prompt.
Tone nudges the response style without changing the task. Technical, concise, friendly, or formal tones keep repeated work consistent.
Format tells the AI how to structure the output so you can scan it quickly: bullets, steps, checklist, table, prose, or code.
Review this pull request for correctness, edge cases, and maintainability. Call out risky assumptions before suggesting changes. Tone: Technical and direct. Be precise, avoid fluff, and explain tradeoffs like a senior engineer reviewing the work. Format: Return the answer as a checklist with sections for blockers, important fixes, small improvements, and tests to add.
Small habits that make PromptMate worth keeping open.
Think about instructions you type every week — code review format, email drafts, explaining concepts. Those are your first 5 saves.
Setting tone and format on save means every session starts with the same AI behavior — no drift, no retraining the model each time.
Don't over-engineer prompts upfront. Save a rough version, use it, notice what's missing, then edit inline. The version history keeps your original.
Every prompt you use is logged. If a session produced great output but you closed the tab, scroll the history — the prompt that worked is still there.
Install PromptMate, save the prompts you actually use, and get them back in one click — in ChatGPT, Claude, DeepSeek, or Kimi, every session.